Articles dans des revues à comité de lecture
|Oxygen adsorption observed during the epitaxy of V(110) on the (1120) Î±-Al2O3 surface|
|Kierren B., Gourieux T., Bertran F., Krill G.|
|Applied Surface Science 68 (1993) 341|
Oxygen structures (c(6 X 2) and p(11 X 4)) have been observed during the epitaxy of V(110) on a (1120) Î±-Al2O3 surface. The p(11 X 4)-O structure is reported for the first time. Results based on Auger spectroscopy show that the oxygen coverage for the p(11 X 4) structure must be âˆ? 20% smaller than that for the c(6 X 2) structure. In-plane parameters deduced from RHEED patterns observed on the initial sapphire surface are in accordance with the parameters of the oxygen sub-lattice of sapphire. A clean V(110) surface is obtained after several hours of succesive annealing and ion bombardment.